BILLINGS, Mont. - Montana State Billings hit six more home runs Saturday completing a four-game series sweep of Northwest Nazarene in Billings.

Meg Harasymczuk, Bobbie Lee and Aubrey Conceicao all hit two home runs in a 6-4, 11-7 doubleheader sweep at MSUB's Cenex Stadium.

The Yellowjackets (16-5, 13-3) ran their win streak to seven in opening up a two-game lead over second-place Simon Fraser.

Harasymczuk, who had four home runs in the series to run her season total to nine, had solo shots in both the first and second innings of the opener. Lee also homered in the first as MSUB scored four runs in the opening inning.

Taylor Hoke drove in two runs in the opening inning with a single. NNU also went deep twice as Arielle Chao and Elizabeth Beaty had solo shots in the third and seventh.

Beaty's seventh inning blast was the only hit off of Kasie Conder in four innings of relief. Conder picked up the win improving to 4-0.

Conceicao drove in four runs in the nightcap, with a pair of two-run home runs in the first and third innings. Lee had another solo shot in the fifth.

Conceicao led a 14-hit attack with three safeties. Rose Harrington, Emily Osborn, Jenna VanEykeren and Hoke all had two hits.

Emily Renfrow paced NNU (3-15, 3-11) with three hits. Baylee Jolliffe, Cara Duckworth and Beaty had two hits each. Beaty drove in three runs with a two-run home run in the first and a leadoff home run in the fifth.